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Faraday rotation is one of the most widely used observables to infer the strength and configuration of the magnetic field in the ionised gas of the Milky Way and nearby spiral galaxies. Here we compute synthetic Faraday rotation maps at…

We present a statistical method to derive the stellar density profiles of the Milky Way from spectroscopic survey data, taking into account selection effects. We assume that the selection function of the spectroscopic survey is based on…

We estimate the mass of the Milky Way (MW) within 21.1 kpc using the kinematics of halo globular clusters (GCs) determined by Gaia. The second Gaia data release (DR2) contained a catalogue of absolute proper motions (PMs) for a set of…

Astrophysics of Galaxies · Physics 2019-03-20 Laura L. Watkins , Roeland P. van der Marel , Sangmo Tony Sohn , N. Wyn Evans

Three methods for computing the total star formation rate of the Milky Way agree well with a reference value of $1.65\pm0.19$ M$_\odot$ yr$^{-1}$. They are then used to determine the radial dependence of the star formation rate and face-on…

Astrophysics of Galaxies · Physics 2025-01-27 D. Elia , N. J. Evans , J. D. Soler , F. Strafella , E. Schisano , S. Molinari , A. Giannetti , S. Patra

We perform analysis of the three-dimensional kinematics of Milky Way disk stars in mono-age populations. We focus on stars between Galactocentric distances of $R=6$ and 14 \,kpc, selected from the combined LAMOST DR4 red clump giant stars…

We propose a new method for measuring the spatial density distribution of the stellar halo of the Milky Way. Our method is based on a pairwise statistic of the distribution of stars on the sky, the angular two-point correlation function…

Astrophysics of Galaxies · Physics 2023-08-09 Anda Chen , Zhigang Li , Yougang Wang , Yan Gong , Xuelei Chen , Richard J. Long

The Milky Way disc presents a warp, a flare, lopsidedness and other deviations from a purely axisymmetrical double exponential density component, both for the stellar and the gas component. Moreover, recent large-scale extended kinematics…

Astrophysics of Galaxies · Physics 2022-02-07 Martin Lopez-Corredoira

We analyse a sample of 52,000 Milky Way (MW) type galaxies drawn from the publicly available galaxy catalogue of the Millennium Simulation with the aim of studying statistically the differences and similarities of their properties in…

In this paper, we have investigated one of the alternative theories to dark matter named MOdified Gravity (MOG) by testing its ability to describe the local dynamics of the Milky Way in vertical and transverse directions with the baryonic…

Astrophysics of Galaxies · Physics 2020-06-15 Zahra Davari , Sohrab Rahvar

The Milky Way (MW) is our unique laboratory to test star formation theories at the level of individual stars, serving as the Rosetta Stone to interpret extragalactic observations. The proposed White Paper focuses on the following key…

Instrumentation and Methods for Astrophysics · Physics 2025-12-17 Loredana Prisinzano , Germano G. Sacco , Francesco Damiani , Amelia Bayo , Salvatore Sciortino , Marco Tarantino , Rosaria Bonito , Fatemeh Zahra Majid

We model the phase-space of the kinematic tracers using general, smooth distribution functions to derive a conservative lower bound on the total mass within 150-200 kpc. By approximating the potential as Keplerian, the phase-space…

Astrophysics of Galaxies · Physics 2015-03-19 Łukasz Bratek , Szymon Sikora , Joanna Jałocha , Marek Kutschera

I provide a model rotation curve for the Milky Way that matches the details of the terminal velocity curve normalized to the Galactocentric distance $R_0 = 8.122$ kpc obtained by the GRAVITY collaboration and the corresponding circular…

Astrophysics of Galaxies · Physics 2018-08-29 Stacy McGaugh

Understanding how the large-scale kinematics of the MW shape the formation and evolution of the interstellar medium remains challenging from an observational perspective, and numerical models that can reproduce the observed structure and…

Astrophysics of Galaxies · Physics 2026-04-29 Eva Durán-Camacho , Ana Duarte-Cabral

The Milky Way (MW) is surrounded by dozens of satellite galaxies, with six-dimensional (6D) phase space information measured for over 80% of this population. The spatial distribution of these satellites is an essential probe of galaxy…

Astrophysics of Galaxies · Physics 2024-10-18 Ekta Patel , Lipika Chatur , Yao-Yuan Mao

We present a method to calculate gravitational potential gradients within regions containing few tens of thousands stars with known phase space coordinates. The central idea of the method is to calculate orbital arcs for each star within a…

Astrophysics of Galaxies · Physics 2018-10-10 Rain Kipper , Elmo Tempel , Peeter Tenjes

Stars and their kinematics provide one of the tools available for studies of the shapes of galaxies and their halos. In this review I focus on two specific applications: the shape of the Milky Way dark halo and the shape of the LMC disk.…

Astrophysics · Physics 2017-08-23 Roeland P. van der Marel

Gaia EDR3 has provided proper motions of Milky Way (MW) dwarf galaxies with an unprecedented accuracy, which allows us to investigate their orbital properties. We found that the total energy and angular momentum of MW dwarf galaxies are…

Astrophysics of Galaxies · Physics 2023-07-03 Yang Y. , Hammer F. , Li H. , Pawlowski M. S. , Wang J. L. , Babusiaux C. , Mamon G. A. , Bonifacio P. , Jiao Y. , Wang H.

Directionally sensitive dark matter (DM) direct detection experiments present the only way to observe the full three-dimensional velocity distribution of the Milky Way halo local to Earth. In this work we compare methods for extracting…

Cosmology and Nongalactic Astrophysics · Physics 2017-01-10 Bradley J. Kavanagh , Ciaran A. J. O'Hare

The conservation of stellar actions is a fundamental assumption in orbit reconstruction studies in the Milky Way. However, the disc is highly dynamic, with time-dependent, non-axisymmetric features like transient spiral arms and giant…

Astrophysics of Galaxies · Physics 2025-09-24 Arunima Arunima , Mark Krumholz , Michael Ireland , Chuhan Zhang , Zipeng Hu
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